Swaging-machine.



315.8355329. PATENTED Nov. 13, 1906. J. A. HoRToN.

SWAGING MACHINE.

APPLICATION FILED JULYZI, 1901. BENEWED APE.' 16, 1902.

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VI/'inesses: I l w I' r al Na 835 729. PATE T J. A. BURTON. N Bp Nov 13, 1,906

SWAGING MACHINE. APPLICATION FILED JULY 27, 1901. BENEYYBD APB. 16, 1902.

v Inve y im of which t e following is a spec lUrurnn STATES PnP-ram? OFFICE.

y,JAMES A. HORTON, OF BROOKLYN, NEW YORK, ASSIGNOR TO IROQUOIS MACHINE' COMPANY, OF NEW YORK, N; Y., A CORPORATION OF NEW YORK.

swAelNe-MAGHINE.

'Patented Nov. 13, 190e.

Application led July 27,1901. Renewed April 16, 1902. Serial No. 103,187.

To aZZ whom, it may concern.-

'Be it known that I, JAMES A. HoRToN, of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Im rovements in Swagin -Machines,

' 'cation This linvention relates .to metal-swaging machines employing a die-holder having dies to act on the' work and a roll-cage having rolls which transmit radial blows through the dies to the workawhen the roll-cage and dieholder receivea relative [rotary movement.

' Heretofore the roll-cage has rotated loosely,- being moved intermittently by the die-holder at each blow, which has caused great racking strains, resulting in noise and rapid deterioration of the machine.

vOne of the objects of my invention is to reduce the noise and wear and preserve a definite ratio of rotation -between the dieholder and the roll-cage. 1

Another object is to enlarge the ca abilities of the machine, and this I accomp ish by imparting a progressive inward movement to the dies upon the work and making them ad- `iustable as to the opening between them, all

. in a novel manner as hereinafter described dinal section.

and claimed.

Of the accompanying drawings, forming a part of this specnication, Figure 1 represents a side elevation of a swaging-machine constructed in accordance with my invention, partly broken away and in section. Fi 2 represents a front elevation partly bro en away. Fig. 3 represents a vertical longitu- Fig. 4 represents a section on line4 4 of Fig. 3. Fig. 5 represents a perspective view of the die-holder. Fig. 6 represents a side elevation of the hammering device. Fig. 7 represents a perspective view of the props and their carrier. Fig. 8 repre-l sents a side elevation, artly in section, showing one of the die-bloc s andthe correspondprop. Fig. 9 represents an end elevation of the die-holder with contentsl removed. Fig. 10 represents a perspective view of the prop-controlling cam. Fig. llrepresents a rear elevation of said cam. Fig. 12 represents aview similar to Fig. 8, showing a modilied form of prop and die.

The same reference characters indicate th same parts in all of the figures. p

the shaft 1 rotates, said holder having a'iixed steel ring 10, which forms' the outer bearing for a series of rolls 11 11, mounted in sockets in a roller-cage 12. The backers 6 are provided with rounded outer ends which project slightly into the path of the`rollers 11 11,

` with the result that as the die-holder 3 is romeshing with a small gear 14 upon a countershaft 15, which has fixed toit a gear 16, meshing with a ear 17, fixed to the shaft 1. By this means t e roll-cage' 12 is positively rotated in the same direction as-the die-carrier 3, but at a slower speed,which 'is made equivalent to the speed which would be 1mparted to-said roll-cage at the moment of engagement between the backers 6 and any palr of rolls if the roll-cage were allowed to rotate loosely. By thus positively controlling the relative rate of rotation of the dieholder and series of rolls I am enabled to avoid the leX- cessive racking to' which machines employin a loosely or idly rotating roll-holder are su ject, such racking'arising from the fact that each 4time the backers strike a pair of rolls the speed of the whole series of rolls, which falls between the blows, must be suddenly and momentarily accelerated. The shock thus produced causes great noise and wear, which are largely doneaway with in my'machine. relative rate of rotation of the roll-cage an' the holder I am also enabled to impart diffe i',

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Bypositively controlling the using dies which have fiat or tangent work-` ing faces and rotating the work at`a proper speed.

18 is a retaining-plate removably secured to the face of the die-holder 3 and having apertures through which the ends of the props 7 project, and 19 is an outer retaining-plate secured to the' face of the fixed holder 8, said plates having central apertures through irhich the work may be inserted between the ies. n

The two props 7 7 are of tapered form, being provided with outer or back sides 20 parallel to the axis of the shaft 1 and fitting against the complemental inner sides of the backers 6 6 and with inner sides 21, having a general inclination to the said back sides and fitting against complementally-inclined back sides 22, formed on the die-blocks 5. By imparting an axial movement to the props 7 between the backers and die-blocks the distance betweenv the working faces of said dieblocks and the outer ends of the backers 6 may be varied, and since the rollers 11 have a fixed range of movement under the constraint of the ring 10 such movement of the props will have the effect of varying the size of the aperture between the die-blocks.

For the purposes of the present specification and claims I consider the die or swaging-tool as that immediate portion of the dieblock 5 upon which its working face is formed, while the outer portion of said dieblock on which the inclined face 22 is formed constitutes part of an abutment of variable width interposed between the die and the hammering device, the other parts of said abutment being the props 7 and backers 6. The axial movement of the props 7,v therefore, has the effect of increasing or ecreasing the width of this. abutment. An automatic advance of the props7 during the operation of the hammering device, whereby the dies are gradually closed up on the work, is secured as follows: The props 7 7 are affixed to a head or carrier 23 bymeans of pins 24 24 on the carrier occupying holes 2525, formed in the props, whereby the props are held to the carrier as respects axial movement, but are adapted to move to a limited extent radially with respect thereto. The carrier 23 is attached to a stem or rod 26, mounted to slide in the central a erture of the hollow shaft 1, and is yielding y projected forwardly in a 'direction to advance the props by a spring 270. The said prop-advancing movement of the' rod 26 is resisted by a crown-cam 27,--loosely surrounding the shaft 1 and having its'hub formed with a gear 28 ,which meshes with a gear 29, fixed to the counter-shaft 15.

' The gears 17 and 28 have the same number of teeth, and. the gear 29 has one morevtooth than the gear 16, so that the cam 27 erfor'ms one rotation relatively to the sha 1 in, a large number of rotations of said shaft. The

working edge of the cam 27 is provided-with a series of Vsteps 290 290 and is engaged by a pin 30, attached to the rod 26 and proj ecting through an axially-elongated slot 31 in the shaft 1.

In Fig. 10 the pin 30 is shown resting a w ich will withdraw the greatest extent toward the eft. 27 revolves around the shaft 1 passes in succession on to the ste rops 7 to their As the cam the pin 30 s of the cam and permits the spring 270 to s owly advance the props 7 7 toward the right in a step-by-step manner, thereb gradually closing up the space between t 1e dies. An incline 32 on step in the series to the first step, so that the cycle of the cam may be continuously repeated. vThe rear end of the rod 26 is exposed beyondthe rear end of the shaft 1 and is provided with a knob or handle 33, whereby the rod and wedges may at any time be retracted by hand. i

I form the inclined faces of the props 7 7 and die-blocks 5 5 into a series of steps or serrations 34 35, having individual coacting faces 36 37 parallel to the axis of the shaft l, and with inclined or rounded faces 38 39 on their corners, which rounded faces exert a cam-likeaction against each other during the gxainst the first or left-liand-most step 290,'

the cam 27 leads from the last advance of the props from one step to another, whereby the pro s are permitted to travel u on the die-b ocks easily during periods etween blows. Centrifugal force acts to throw the props, backers, and dieblocks outwardly between blows, so that the advance of the rops 1s easily effected. The pressure of the lows is transmitted at right angles to In `Fig 12 I show a modification of my inf-v vention in which wedges 44, having straight the parallel faces of the steps on the i props and die-blocks, so that there is n0 camv IIO inclined sides ,45 coacting with compley mental sides 46 on the die-blocks 5, are employed in place of the serrated props 7. In this case the wedges are vanced positively instead of` l y means of a spring. p

By means of m improved swaging-machine I am enable to impart shapes to the work which cannot be imparted by an prior swaging-machine's fof which I have owl-- edge.

One suchv shape vor conformation yis that which the work 40visrepresented as havreferably ading in Fig. 3 namely, an enlarged body or stem 41, a reduced neck 42, and a head or outer portion 43 of larger diameter than said neck.

I do not coniinemyself to the exact con-r vice and a swaging-dic mounted and geared for positive relative concentric movement, an abutment of variable width interposed between the two, and means to automatically and progressively vary the Width of said abutment.

3. In a swaging-machine, a hammering device and a swaging-die mounted and geared for positive relative concentric movement, and a tapering prop interposed between said hammering device and die.

4. In a swaging-machine, a hammering device and a sWaging-die mounted for relative concentricl movement, and a serrated tapering prop interposed between the hammering Y device and die.

5. In a swaging-machine, a hammering device and a swaging-die mounted and geared for positive relative concentric movement, the die being movable radially of the axis of rotation, and a tapered prop interposed between the hammering device and die a-nd movable longitudinally of said axis.

6. In a swaging-machine, aihammering device and a swaging-d'ie mounted for relative concentric movement, the die Kbeing movable radially of the axis of rotation, a tapered prop interposed between the hammerin device and die and movable longitudinal v of said axis, said prop having steps provided with acting faces parallel to its direction of movement, and acoacting radially-movable member inter osed between the hammering device and ie and having complemental steps. n

7. In a swaging-machine, alhammering device and a. swaging-die mounted for relative concentric movement, the die being movable radially of the axis of rotation, a tapered prop interposed between the hammeri'n device and die and movable longitudinal of said axis, said prop having steps provided with acting faces parallel to its direction of movement, a coacting radially-movable member interposed between the hammering device and die and having complemental steps, and automatic means to intermittently advance said prop.

8. In a swaging-machine, a hammering device and a swaging-die mounted for relative rotation, the die being movable radially of the axis of rotation, a' tapered prop interposed between the hammermg device and die and movable longitudinally of said axis, said prop having steps provided with acting faces parallel to its Vdirection of movement, and a coacting radially-movable member interposed between the hammering device and die and having complemental steps, the corners of the steps on the prop and complemental member having coacting cam-inclines.

9. In a swaging-machine, a hammering deviceand a dle-holder mounted and geared for positive relative concentric movement, said die-holder having diametric guides, opposed die-blocks and their backers mounted for radial movement in said guides, an axially-movable prop-carrier, and a pair of taered props interposed between -the dielocks and backers, said props being held to their carrier as to axial movement and radially movable with respect thereto.

10. In a swagin -machine, a hammering device and a die-ho der mounted for relative concentric movement, die-blocks and their backers movable radially on said die-holder, props interposed between said dieblocks and ac ers and movable longitudinally of the axis of rotation, a carrier for said props having an externally-exposed handle, a spring adapted to move said carrier in a prop-advancing direction, and a cam mounted to rotate with respect to the die-holder and opposing said spring.

11. In a swaglng-machine, a hammerin device and a die-holder mounted and geared for positive relative concentric movement, a swaging-die and hacker mounted for radial movement on said holder and coacting means on the backer and die-holderto limit the outward radial movement of said backer, said means consist' of ribs or lips on o posite sides of the bac er, and recesses in tlhedieholder to receive said lips.

1'2. In a swaging-machine, a die-holder having radially-movable die, a series of rolls adapted to impart hammering blows to said die, and means to produce a predetermined positively-controlled relative concentric movement of the die-holder and rolls.

In testimony whereof I have ai'lixed my signature in presence of two witnesses.

JAMES A. I-IORTON.

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